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B3 ESS Unit
User Manual
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B3 ESS Unit User Manual
Content
STATEMENT OF LAW.................................................................................................................................1
SAFETY PRECAUTIONS AND MAINTENANCE INSTRUCTIONS ................................................................. 2
PREFACE.................................................................................................................................................... 3
1 INTRODUCTION..................................................................................................................................... 4
1.1 BRIEF INTRODUCTION..........................................................................................................................4
1.2 PRODUCT PROPERTIES.........................................................................................................................4
1.3 PRODUCT IDENTITY DEFINITION.............................................................................................................4
2 PRODUCT SPECIFICATION..................................................................................................................... 5
2.1 SIZE AND WEIGHT.............................................................................................................................. 5
2.2 PERFORMANCE PARAMETER.................................................................................................................5
2.3 INTERFACE DEFINITION........................................................................................................................ 5
2.3.1 DIP switch definition and description......................................................................................6
2.4 BATTERY MANAGEMENT SYSTEM(BMS)............................................................................................... 9
2.4.1 Voltage Protection................................................................................................................. 9
2.4.2 Current Protection..................................................................................................................9
2.4.3 Temperature Protection.......................................................................................................1 0
2.4.4 Other Protection...................................................................................................................1 0
3 INSTALLATION AND CONFIGURATION............................................................................................... 11
3.1 PREPARATION FOR INSTALLATION........................................................................................................11
3.1.1 Environmental requirements............................................................................................... 1 1
3.1.2 Tools and data......................................................................................................................1 1
3.1.3 Technical preparation.......................................................................................................... 1 2
3.1.4 Unpacking inspection...........................................................................................................1 2
3.1.5 Engineering coordination.....................................................................................................1 4
3.2 EQUIPMENT INSTALLATION.................................................................................................................14
3.2.1 Installation preparation........................................................................................................1 4
3.2.2 Mechanical installation.........................................................................................................1 5
3.2.3 Electrical installation............................................................................................................1 6
3.2.4 Battery parameter settings on the inverter.........................................................................1 8
3.2.5 Register on the website after installation............................................................................1 8
4 USE, MAINTENANCE AND TROUBLESHOOTING................................................................................ 19
4.1 BATTERY SYSTEM USAGE AND OPERATION INSTRUCTIONS....................................................................... 19
4.2 ALARM DESCRIPTION AND PROCESSING................................................................................................2 0
4.3 ANALYSIS AND TREATMENT OF COMMON FAULTS.................................................................................. 20
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B3 ESS Unit User Manual
Statement of Law
Copyright of this document belongs to Daqin New Energy Tech (Taizhou) Co., Ltd.
No part of this documentation maybe excerpted, reproduced, translated,
annotated or duplicated in any form or by any means without the prior
written permission of Daqin New Energy Tech (Taizhou) Co., Ltd. All Rights Reserved.
This product complies with the design requirements of environmental protection and personal
safety. The storage, use and disposal of the products shall be carried out in accordance with the
product manual, relevant contract or relevant laws and regulations.
Customer can check the related information on the website of Daqin New Energy Tech (Taizhou)
Co., Ltd when the product or technology is updated.
Web URL：http://www.dyness-tech.com.cn
Please note that the product can be modified without prior notice.
Revision History
Revision NO.
Revision Date
Revision Reason
1.0
2019.04.24
1.First Published
1.1
2019.06.24
1. System adds DIP switch
2. Renamed B4874 to B3
1.2
2019.07.29
1.Update the cable specification
1.3
2020.06.28
1.Add battery parameter settings on the inverter.
2.Add register on the website after installation.
1.4
2020.09.27
1.Add new inverters in DIP switch description
1.5
2021.01.10
1.Update the design
1.6
2021.03.24
1. Update the description of the DIP setting
2.Delete the description of the non-DIP model
1.7
2021.09.06
1.Update the size of new B3
2.Power cable is changed to optional3.Update charge
current limit value to 1A in protection mode.
3.Update DIP switch description.
产 品 版 本
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B3 ESS Unit User Manual
Safety Precautions maintenance instructions
Warning
Please do not put the battery into water or fire, in case of explosion or any other situation
that might endanger your life.
Please connect wires properly while installation, do not reverse connect.
To avoid short circuit, please do not connect positive and negative poles with conductor on
the same device.
Please avoid any form of damage to battery, especially stab, hit, trample or strike.
Please shut off the power completely when removing the device or reconnecting wires
during the daily use or it could cause the danger of electric shock.
Please use dry powder extinguisher to put out the flame when encountering a fire hazard,
liquid extinguisher could result in the risk of explosion.
For your safety, please do not arbitrarily dismantle any component in any circumstances.
The maintenance must be implemented by authorized technical personnel or our
company’s technical support. Device breakdown due to unauthorized operation will not be
covered under warranty.
Caution
Our product have been strictly inspected before shipment. Please contact us if you find any
abnormal phenomena such as device outer case bulging.
The product shall be grounded properly before use in order to ensure your safety.
To assure the proper use please make sure parameters among the relevant device are
compatible and matched.
Please do not mixed-use batteries from different manufacturers, different types and models,
as well as old and new together.
Ambient and storage method could impact the product life span, please comply with the
operation environment instruction to ensure device works in proper condition.
For long-term storage, the battery should be recharged once every 6 months, and the
amount of electric charge shall exceed 80% of the rated capacity.
Please charge the battery in 18 hours after it fully discharged or over-discharging protection
mode is activated.
Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total
current of all loads).
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B3 ESS Unit User Manual
Preface
Manual declaration
B3 lithium iron phosphate battery energy storage system can provide energy storage
for photovoltaic power generation users through parallel combination. Our product can store
extra electricity into battery from photovoltaic power generation system in daytime and supply
stable power to user’s equipment as power backup at nighttime or any time when needed. It can
improve the efficiency of photovoltaic power generation and increase the electric power
efficiency by peak load shifting.
This user manual details the basic structure, parameters, basic procedures and methods of
installation and operation and maintenance of the equipment.
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1 Introduction
1.1 Brief Introduction
B3 lithium iron phosphate battery system is a standard battery system unit, customers can
choose a certain number of B3 according to their needs, by connecting parallel to form a larger
capacity battery pack, to meet the user's long-term power supply needs. The product is
especially suitable for energy storage applications with high operating temperatures, limited
installation space, long power backup time and long service life.
1.2 Product Properties
B3 energy storage product’s positive electrode materials are lithium iron phosphate, battery cells
are managed effectively by BMS with better performance, the system’s features as below:
Comply with European ROHS, Certified SGS, employ non-toxic, non-pollution environment-
friendly battery.
Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.
Carries battery management system with better performance, possesses protection
function like over-discharge, over-charge, over-current, abnormal temperature.
Self-management on charging and discharging, Single core balancing function.
Intelligent design configures integrated inspection module.
Flexible configurations allow parallel of multi battery for longer standby time.
Self-ventilation with lower system noise.
Less battery self-discharge, then recharging period can be up to 10 months during the
storage.
No memory effect so that battery can be charged and discharged shallowly.
With wide range of temperature for working environment, -20℃~ +55 ℃, circulation span
and discharging performance are well under high temperature.
Less volume, lighter weight.
1.3 Product identity definition
Figure1-1 Battery Energy Storage System nameplate
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B3 ESS Unit User Manual
Battery voltage is higher than safe voltage, direct
contact with electric shock hazard.
Be careful with your actions and be aware of the
dangers.
Read the user manual before using.
The scrapped battery cannot be put into the garbage can
and must be professionally recycled.
After the battery life is terminated, the battery can
continue to be used after it recycled by the professional
recycling organization and do not discard it at will.
This battery product meets European directive
requirements.
This battery product passed the TUV certification test.
Dangerous goods warning label on the top of the battery
module
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B3 ESS Unit User Manual
2 Product Specification
2.1 Size and Weight
Table 2-1 B3 Device size
Product
Nominal
Voltage
Nominal
Capacity
Dimension
Weight
B3
DC48V
75Ah
480×405×132mm
≈32.5kg
2.2 Performance Parameter
Table 2-2 B3 performance parameter
Item
B3 Parameter value
Nominal Voltage (V)
48
Work Voltage Range (V)
42~54
Nominal Capacity (Ah)
75
Nominal Energy (kWh)
3.6
Recommended Charge/Discharge Current (A)
37.5
Max. Power Charge/Discharge Current (A)
75
Peak Power Charge/Discharge Current (A)
100 (15S)
Charge Voltage (Vdc)
53.5
2.3 Interface Definition
This section elaborates the interface functions of the front interface of the device.
1
2 3 4 5 6 7 12 8 9 10 11
Figure2-1
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B3 ESS Unit User Manual
Table 2-3 Interface Definition
Item
Name
Definition
1
Powerswitch
OFF/ON, remains ‘ON when using
2
Positivesocket
Battery output or parallel positive line
3
ADD
DIP switch
4
SW (battery
wake/sleep
Switch)
When power switch is in ‘ON’, long pressing SW for 3s to enable
the battery for switch-on ,then switch on the DC breaker
between the battery with inverter.If you need to shut down the
system,firstly swich off the DC breaker between the battery with
the inverter, then press SW for 3s and switch the power button
to “OFF”.
5
SOC
Green light, showing battery capacity
6
ALM
Red lights, flash when warming, always on when
Protection. When the condition of triggering protection is
removed, the battery can recover automatically
7
RUN
Green light, flashing when standby, always on when discharge,
flash when charging
8
CAN/485
Communication Port
Communication (factory default CAN communication)
9
DRY CONTACT
/
10
Negative socket
Battery output or parallel negative line
11
Grounding
Shell ground connection
12
COM
Communication port, support RS232
2.3.1 DIP switch definition and description
Table 2-4 Interface Definition
DIP switch position (master communication protocol and baud rate selection)
#1
#2
#3
#4
Define different protocols；
Distinguish between master and slave
OFF：CAN: 500K,485: 9600
ON：CAN: 250K,485: 115200
DIP switch description:
When the batteries are connected in parallel, the master communicates with the slaves through
the CAN interface. The master summarizes the information of the entire battery system and
communicates with the inverter through CAN or 485.
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B3 ESS Unit User Manual
1. If the master is the latest B3 battery with DIP switch:
(1) The communication cable from the master CAN IN to the inverter comm port should be
the correct one.
(2) When the battery works with GOODWE、Solis、LUX、Sofar、DEYE、VICTRON、
IMEON、Sungrow、SMA、RENAC、DELIOS、SAJ(CAN Comm) ,before starting the
battery,you need put the master DIP switch "# 3" to the "ON" position (to the top), then turn
on the batteries.
Master Setting 1
(3) If the battery communicates with the Axpert-king/VMIII/MAX,Infinisolar,Growatt
SPH/SPA(CAN comm)、GMDE, turn the master DIP switch "#2" to "ON" position.
Master Setting 2
(4) If the battery communicates with the Growatt SPF HVM-P/ES/WPV by RS485 comm, turn
the master DIP switch "#2" and "#3" to "ON".
Master Setting 3
(5) If the battery communicates with the Schneider Conext Series, turn the master DIP switch
"#1" and "#3" to "ON".
Master Setting 4
(6) When you setup the master DIP as setting 1~4,all the slaves keep the DIP 0000,no need
change.
(7) If the energy storage system has only one B3, it is the master itself, and still follow the
above steps.
Note: For more information of matching inverter brands, please subject to the latest
document
<The list of compatibility between Dyness ESS and Inverters >.
Figure 2-2 CAN/485 interface definition
Front
Plug Socket of communication port
CAN/485
Table 2-5 Pin Definition
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Below is pin Definition of B3
Foot position
Color
Definition
PIN1
Orange/white
485B
PIN2
Orange
485A
PIN3
Green/white
GND
PIN4
Blue
CANH
PIN5
Blue/white
CANL
PIN6
Green
Reserve
PIN7
Brown/white
XIN
PIN8
Brown
Reserve
PIN9
Orange/white
Reserve
PIN10
Orange
Reserve
PIN11
Green/white
GND
PIN12
Blue
CANH
PIN13
Blue/white
CANL
PIN14
Green
Reserve
PIN15
Brown/white
XOUT
PIN16
Brown
Reserve
The Pin definition of COM port
Foot position
Definition
PIN1
Reserve
PIN2
GND
PIN3
TXD
PIN4
RXD
PIN5
GND
PIN6
Reserve
Note:Please pay attention of the communication com definition of inverter,in order to avoid
voltage in the port to affect communication.
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Table 2-6 LED status indicators
status indicators of B3
Battery
Status
SOC
LED1
LED2
LED3
LED4
LED5
ALM
RUN
Shutdown
/
off
off
off
off
off
off
off
Standby
80%＜SOC≤100%
●
●
●
●
●
off
Flashing
60%＜SOC≤80%
●
●
●
●
off
off
Flashing
40%＜SOC≤60%
●
●
●
off
off
off
Flashing
20%＜SOC≤40%
●
●
off
off
off
off
Flashing
0%＜SOC≤20%
●
off
off
off
off
Flashing
Flashing
SOC=0
off
off
off
off
off
Flashing
/●
Flashing
Charging
SOC=100%
●
●
●
●
●
off
Flashing
80%＜SOC＜100%
●
●
●
●
Flashing
off
Flashing
60%＜SOC≤80%
●
●
●
Flashing
off
off
Flashing
40%＜SOC≤60%
●
●
Flashing
off
off
off
Flashing
20%＜SOC≤40%
●
Flashing
off
off
off
off
Flashing
0% ≤SOC≤20%
Flashing
off
off
off
off
off
Flashing
Discharging
80%＜SOC≤100%
●
●
●
●
●
off
●
60%＜SOC≤80%
●
●
●
●
off
off
●
40%＜SOC≤60%
●
●
●
off
off
off
●
20%＜SOC≤40%
●
●
off
off
off
off
●
0%＜SOC≤20%
●
off
off
off
off
Flashing
●
SOC=0
off
off
off
off
off
Flashing
/●
Flashing/●
A special ALM light flashing state: when the communication between batteries is
lost or abnormal, all the lights from SOC to RUN of the master battery will flash
together.
● means green light always on ● means red light always on
Flashing: means green light flashing or red light flashing
2.4 Battery Management System(BMS)
2.4.1 Voltage Protection
Low Voltage Protection in Discharging：
When any battery cell voltage or total voltage is lower than the rated protection value during
discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm
sound. Then battery system stops supplying power to the outside. When the voltage of each cell
back to rated return range, the protection is over.
Over Voltage Protection in Charging：
Battery will stops charging when total voltage or any battery cell voltage reaches the rated
protection value during charging stage. When total voltage or all cell back to rated range, the
protection is over.
2.4.2 Current Protection
Over Current Protection in Charging：
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B3 ESS Unit User Manual
B3: when the charge current ＞90A, current limit protection mode is activated, current will be
limited to 1A,protection is removed after rated time delaying 10S. Circulate like this until the
current is lower than 90A.
Over Current Protection in Discharging：
When the discharge current is higher than the protection value, the battery buzzer alarms and
the system stops discharging. Protection is released after rated time delaying.
Caution:
The buzzer sound alarm setting can be manually turned off on the background software, and the
factory default is on.
2.4.3 Temperature Protection
Low/Over temperature protection in charging：
When battery’s temperature is beyond range of -5 ℃~+55 ℃during charging,
temperature protection is activated, device stops charging.The protection is over when
temperature back to rated working range.
Low/Over temperature protection in discharging：
When battery’s temperature is beyond range of -20 ℃~+55 ℃during discharging,
temperature protection is activated, device stops supplying power to the outside.The protection
is over when temperature back to rated working range..
2.4.4 Other Protection
Short Circuit Protection：
When the battery is activated from the shutdown state, if a short circuit occurs, the system starts
short-circuit protection for 60 seconds.
Self-Shutdown：
When device connects no external loads and power supply and no external communication for
over 72 hours, device will dormant standby automatically.
Caution
Battery’s maximum discharging current should be more than load’s maximum working current.
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3 Installation and Configuration
3.1 Preparation for installation
Safety Requirement
This system can only be installed by personnel who have been trained in the power supply
system and have sufficient knowledge of the power system.
The safety regulations and local safety regulations listed below should always be followed during
the installation.
All circuits connected to this power system with an external voltage of less than 48V
must meet the SELV requirements defined in the IEC60950 standard.
If operating within the power system cabinet, make sure the power system is not
charged. Battery devices should also be switched off.
Distribution cable wiring should be reasonable and has the protective measures to avoid
touching these cables while operating power equipment.
when installing the battery system, must wear the protective items below:
The isolation gloves Safety goggles Safety shoes
Figure3-1
3.1.1 Environmental requirements
Working temperature: -20 ℃~ +55 ℃
Charging temperature range is 0℃~+55 ℃,
Discharging temperature range is -20 ℃~+55 ℃
Storage temperature: -10 ℃~ +35 ℃
Relative humidity: 5% ~ 85%RH
Elevation: no more than 4000m
Operating environment: Indoor installation, sites avoid the sun and no wind, no
conductive dust and corrosive gas.
And the following conditions are met:
Installation location should be away from the sea to avoid brine and high humidity
environment.
The ground for product arrangement shall be flat and level.
There is no flammable explosive materials near to the installation site.
The optimal ambient temperature is 15℃~ 30℃.
Keep away from dust and messy zones.
3.1.2 Tools and data
Tools and meters that may be used are shown in table 3-1.
Table 3-1 Tool instrument
Name
Screwdriver（Slotted、Phillips）
Multimeter
Torque wrench
Clamp current meter
Diagonal pliers
Insulation tape
Pointed nose pliers
Temperature meter
Pliers to hold the wire
Anti-static bracelet
Stripping pliers
Cable tie
Electric drill
Tape measure
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3.1.3 Technical preparation
Electrical interface check
Devices that can be connected directly to the battery can be user equipment, power supplies, or
other power supplies.
Confirm whether the user's PV power generation equipment, power supply or other
power supply equipment has a DC output interface, and measure whether the DC power
output voltage meets the voltage range requirements in Table 2-2.
Confirm that the maximum discharge current capability of the DC power interface of the
user's photovoltaic power generation equipment, power supply or other power supply
equipment should be higher than the maximum charging current of the products used in
Table 2-2.
If the maximum discharge capacity of the DC power interface of the user's photovoltaic
power generation equipment is less than the maximum charging current of the products
used in Table 2-2, the DC power interface of the user's photovoltaic power generation
equipment shall have a current limiting function to ensure the normal operation of the
user’s equipment.
Verify that the maximum operating current of the battery-powered user equipment
(inverter DC input) should be less than the maximum discharge current of the products
used in Table 2-2.
The security check
Firefighting equipment should be provided near the product, such as portable dry powder
fire extinguisher.
Automatic fire fighting system shall be provided for the case where necessary.
No flammable, explosive and other dangerous materials are placed beside the battery.
3.1.4 Unpacking inspection
When the equipment arrives at the installation site, loading and unloading should be
carried out according to the rules and regulations, to prevent from being exposed to sun
and rain.
Before unpacking, the total number of packages shall be indicated according to the
shipping list attached to each package, and the case shall be checked for good condition.
In the process of unpacking, handle with care and protect the surface coating of the object.
Open the package, the installation personnel should read the technical documents, verify
the list, according to the configuration table and packing list, ensure objects are complete
and intact, if the internal packing is damaged, should be examined and recorded in detail.
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B3 ESS Unit User Manual
Packing list is as
follows: Item
Specification
Quantity
Figure
Battery-B3
48V/75Ah
480×405×132mm
1
Power cable-
positive
Red
/25mm2/L2050mm
Optional:
If you need,
please
contact the
dealer to
purchase
Power cable-
negative
Black
/25mm2/L2050mm
Optional:
If you need,
please
contact the
dealer to
purchase
Parallel cable-
positive
Red
/25mm2/L215mm
1
Parallel cable-
negative
Black
/25mm2/L215mm
1
Communication
parallel cable
Black
/L250mm/Double
RJ45 plug
1
Communication
cable-to inverter
Black
/L2000mm /Double
RJ45 plug
1
Ground wire
L500mm,4mm²
1
User Manual
B3 User manual
1
Screw
Combination screws
M6*14
4
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B3 ESS Unit User Manual
3.1.5 Engineering coordination
Attention should be paid to the following items before construction:
Power line specification.
The power line specification shall meet the requirements of maximum discharge current
for each product.
Mounting space and bearing capacity.
Make sure that the battery has enough room to install, and that the battery rack and
bracket have enough load capacity.
Wiring.
Make sure the power line and ground wire are reasonable. Not easy to short-circuit, water
and corrosion.
3.2 Equipment installation
Table 3-2 Installation steps
Step1
Installation
preparation
Confirm that the ON/OFF switch on the front panel of B3
unit is in the “OFF” state to ensure no live operation.
Step 2
Mechanical
installation
1. Battery placement position determination
2. Battery module installation
Step3
Electrical
installation
1. Ground cable installation
2. Battery module parallel cable installation
3. Parallel communication cable connection
Step4
Battery system
self-test
1. Turn the ON/OFF switch to the "ON" state
2. Press SW button 3S to wake up battery
3. Check the system output voltage and led status
4. Shut down the system
Step5
Connecting
inverter
1. Connect total positive & total negative cable of the
battery system to the inverter
2. Battery module total positive cable installation
3. Battery module total negative cable installation
4. Connect the communication cable from the master
CAN IN to the inverter
5.Turn on the Power switch and wake up system by
SW button
6.Close the DC breaker between inverter and battery
7.Turn on the inverter and check the communication
between inverter and battery system
3.2.1 Installation preparation
1. Prepare equipment and tools for installation.
2. Check the B3 unit and confirm that the ON/OFF switch is in the "OFF" state to ensure the
device is shut off.
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3.2.2 Mechanical installation
Installation method:
The scope of product certification does not extend to
third party supplied racks/cabinets.
1.Place the B3 unit on the bracket as
shown in the figure and push the device
into the cabinet at the installation
position. (The cabinet structure in the
figure is for reference only)
2. Secure the B3 unit to the cabinet
with a nut through the mounting
holes top on the hanging ears of the
B3 unit.
3. Clearances required around battery,
Showns as Figure3-4
Installation method 2: With Simple bracket installation
1. Place the B3 and brackets as
shown in the figure3-5, and
insert the B3 into the
brackets.Use 4 screws to fix
the module on the front
bracket.
2. Install another pair of bracket
on the first one,fixed by
buckles between them.
Figure3-2
Figure3-3
Figure3-4
Figure3-5
Figure3-6
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B3 ESS Unit User Manual
3. Insert the second one B3 into
the brackets.
Figure3-7
4. Stack the required number of
battery and bracket combinations
as described above, and fasten
the top and bottom buckles.
Shown as Figure3-8.
Figure3-8
5. clearances required around
battery,Shown as Figure3-9.
Figure3-9
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B3 ESS Unit User Manual
3.2.3 Electrical installation
Statement：For Australian market, installations should be conducted in
accordance with AS/NZS 3000 and AS/NZS 5139.
Before connecting the power cables, use multi-meter to measure cable continuity, short circuit,
confirm positive and negative, and accurately mark the cable labels.
Measuring methods：
Power cable check: select the buzzer mode of multimeter and detect the both ends of
the same color cable. If the buzzer calls, it means the cable is in good condition.
Short circuit judgment: choose multi-meter resistor file, probe the same end of positive
and negative pole, if the resistor shows infinity, means that the cable is available.
After visual testing of power line connection, the positive and negative poles of the
battery shall be connected respectively to the positive and negative poles of the opposite
terminal.
It is better to add a circuit breaker between the inverter and the battery system. The selection of
the circuit breaker requires:
Current: I =
Inverter power
45V
Voltage: U>60V
For Australian Market, a over-current and isolation device is required between
battery system and inverter.
/
